CVE-2015-4111
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedmc_demux_mp4_ds.ax in an unspecified third-party codec demux in BlackBerry Link before 1.2.3.53 with installer before 1.1.0.22 allows remote attackers to execute arbitrary code via a crafted MP4 file.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceA vulnerability exists in the mc_demux_mp4_ds.ax third-party MP4 demuxer component used by BlackBerry Link. Attackers can exploit this by tricking users into opening a specially crafted MP4 file, which triggers memory corruption leading to arbitrary code execution.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data<= 1.2.3.52CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- M
- Authentication
- None
- Confidentiality
- Partial
- Integrity
- Partial
- Availability
- Partial
AV:N/AC:M/Au:N/C:P/I:P/A:P
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Verify BlackBerry Link is installedCheck for BlackBerry Link installation in Program Files (e.g., C:\Program Files\BlackBerry\BlackBerry Link) or via Add/Remove Programs in Control PanelAffected if BlackBerry Link is present on the system
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Identify installed BlackBerry Link versionOpen Control Panel > Programs and Features, locate BlackBerry Link, and note the version shown in the Version columnAffected if Version is 1.2.3.52 or earlier
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Locate the vulnerable MP4 demuxer componentSearch for the file mc_demux_mp4_ds.ax in the BlackBerry Link installation directory (typically found in the bin or codecs subfolder)Affected if The file mc_demux_mp4_ds.ax exists in the BlackBerry Link installation folder
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Confirm component is registered and activeCheck Windows Registry under HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Setup\OptionalComponents or look for the codec in video playback contexts where BlackBerry Link handles MP4 filesAffected if The codec component is registered or can be invoked by applications handling MP4 files
A system is affected if BlackBerry Link version 1.2.3.52 or earlier is installed AND the mc_demux_mp4_ds.ax component is present and accessible to the system.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataUpdate BlackBerry Link to version 1.2.3.53 or later (installer 1.1.0.22 or later). If immediate patching is not feasible, restrict user ability to open untrusted MP4 files or disable the affected codec component.
- Consultation2.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2015-4111 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2015-4111 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data